Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Keith L Sommers, M.D.

Gynecology Physician in Smithtown, NY · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1821193939

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Registry record

Entity type Individual (Type 1)

Name Dr. Keith L Sommers

Credential M.D.

Sex Male

Practice address 148 Terry Rd, Smithtown, NY, 11787

Phone (631) 862-4000

Fax (631) 862-4017

Enumeration date Sep 13, 2006

Last updated in NPPES Jul 18, 2023

Taxonomy & licenses

207VG0400X Gynecology Physician Allopathic & Osteopathic Physicians · License 176445 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
113276400	Other	NY	EMPIRE
0201238	Other	NY	GHI
0700546	Other	NY	UNITED HEALTHCARE
CP240	Other	NY	OXFORD
01438600	Medicaid	NY	-
113276400	Other	NY	HORIZON
4328076	Other	NM	AETNA
OC5869	Other	NY	PHS
16481	Other	NY	VYTRA
176445	Other	NY	HIP
P62225119	Other	NY	MULTIPLAN
113276400	Other	NY	1199
123262	Other	NY	US HEALTHCARE
4328078	Other	NY	CIGNA
AH01294	Other	NY	MDNY
87F373	Other	NY	BC/BS

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Keith Sommers practice?

The practice location on file with NPPES is in Smithtown, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Keith Sommers?

The National Provider Identifier (NPI) for Keith Sommers is 1821193939, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Richard Halpert Gynecology Physician · Smithtown, NY NPI 1639262538 Personal Woman'S Care Medical Services P C Specialist · Smithtown, NY NPI 1710128038 Debra Kittilsen Advanced Practice Midwife · Smithtown, NY NPI 1447484282 North Shore Hematology Oncology Associates PC Gynecology Physician · Smithtown, NY NPI 1316750227

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-18.